6777990380789 has 8 divisors (see below), whose sum is σ = 7554416523840. Its totient is φ = 6043533218496.

The previous prime is 6777990380779. The next prime is 6777990380813. The reversal of 6777990380789 is 9870830997776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6777990380789 - 2⁴ = 6777990380773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6777990380779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10492244849 + ... + 10492245494.

It is an arithmetic number, because the mean of its divisors is an integer number (944302065480).

Almost surely, 2^{6777990380789} is an apocalyptic number.

It is an amenable number.

6777990380789 is a deficient number, since it is larger than the sum of its proper divisors (776426143051).

6777990380789 is a wasteful number, since it uses less digits than its factorization.

6777990380789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20984490379.

The product of its (nonzero) digits is 2016379008, while the sum is 80.

The spelling of 6777990380789 in words is "six trillion, seven hundred seventy-seven billion, nine hundred ninety million, three hundred eighty thousand, seven hundred eighty-nine".